JP2973766B2 - Refueling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refueling apparatus which automatically determines the type of fuel oil in an automobile fuel tank and permits refueling only when the type of oil matches.

[0002]

2. Description of the Related Art An oiling device having an oil type determining function for determining an oil type of an automobile fuel tank and enabling a fueling operation is disclosed in, for example, Japanese Patent Application Laid-Open No. 4-44996. A gas sensor that responds to
This is connected to a vapor suction port of the nozzle cylinder tip by a pipe made of an air tube or the like, and the suction mechanism guides the vapor in the automobile fuel tank to the gas sensor. By the way, the refueling hose that connects the refueling device body and the refueling nozzle is connected by a safety joint that automatically cuts off when a certain amount of tension is applied, thereby preventing damage to the refueling device body according to regulations. Although obligatory, the pipe that sucks and exhausts the vapor breaks with less force than the oiling hose, so there is no danger that the oiling device will fall over, and no special measures have been taken.

[0003]

However, although the breaking force of the air tube is smaller than that of the oiling hose, the air tube also exerts excessive tension on the pipeline of the oiling device main body at the time of breaking, and may cause a failure or the like. And the need to replace the air tube. The present invention has been made in view of such a problem, and an object of the present invention is to provide an oil type determination function capable of separating a vapor intake / exhaust air tube from a main body when excessive tension is applied. To provide a refueling device.

[0004]

In order to solve such a problem, a fueling device according to the present invention is provided with an air tube opened at a nozzle cylinder tip of a fueling nozzle to a fueling device main body along a fueling hose. in the oil supply apparatus for determining the type of oil to connect the air tube to the conduit for communicating the vapor in the vehicle fuel tank to the determining means and sucked from the opening of the oil type determination means of the fuel supply apparatus body, the fuel supply apparatus
The body protrudes into the refueling device body and
Hold the air tube in a penetrating state, and
Can be elastically deformed by pulling out force
A receiving member into which a packing made of a material is fitted is provided,
In addition, it exerts drag against the pull-out side, and
A claw member that enables the movement of the air tube
And the claw member is pressed by the receiver and is tapered by the tapered portion.
From the disengagement member to open and open the tube.
And a coupler means provided in the main body of the refueling device.
The distal end side of the tube is connected to the conduit via the coupler means .

[0005]

[Function] When the air tube receives a certain amount of tension
Is released from the receiving device, and the joint mechanism is
The release member comes into contact with the receiving member, and the connection with the pipeline is cut off.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the illustrated embodiments. FIG. 3 shows an embodiment of an oil supply device having an oil type determination function to which the present invention is applied.
Reference numeral 1 in the figure denotes a refueling pump driven by a motor M, which is connected to a refueling nozzle 4 by a refueling hose 3 via a flow meter 2. Reference numeral 5 denotes a flow rate pulse transmitter attached to the flow meter, which outputs a pulse proportional to the flow rate to the control device 6, calculates a refueling amount using the pulse, and displays it on the display 7.

[0007] 10 is a negative pressure, positive pressure generating means, supplied with compressed air by the compressed air supply pipe 12 from the compressed air source 11 as shown in FIG. 4, the ejector 13 via a valve V ₁ , and also via a throttle valve 14 and the valve V ₂ is supplied to each selectively air in the gas sensor GS. The air discharged from the ejector 13 is supplied to the air outlet 16 of the nozzle accommodating recess 15, and the negative pressure generated in the ejector 13 is supplied to the gas sensor GS via the pipe 18 via the switching valve V ₃ . Means for detecting a pressure change in the conduit 18 between the negative pressure supply port and the switch valve V ₃ of the ejector 13, the pressure switch PS for outputting a signal when the negative pressure is stronger than a predetermined value in this embodiment Is connected. The switching valve V _3, throttle valve 17
Compressed air is supplied from the compressed air supply pipe 12 via the.

In the middle of the refueling hose 3, when a certain tension is applied, the connection with the refueling device main body is released, so that the refueling device main body 42 does not cause a major accident such as overturning. A safety joint 40 as shown in Japanese Patent No. 48912 is provided, and the air tube 27 is also connected via a joint mechanism 41 described later.

FIG. 1 shows an embodiment of a joint 41 for connecting the air tube 27 and the conduit 18 of the main body. Reference numeral 45 in the figure denotes a packing for locking, 27 is used to oppose a constant frictional force, ie the tension exerted by normal lubrication work,
D for the tension, such as the safety joint 40 is released
To exert a frictional force enough to permit the movement of the A tube 27, Eachu the elastically deformable material such as rubber
The lubrication device main body 4 is configured to penetrate the
2 is fitted to a receiving member 46 fixed to the receiving member 2. This receiver
The member 46 comes into contact with an end of an engagement release member 54 described later.
The lubrication device body 42 is formed so as to protrude inward.
Have been.

Reference numeral 50 denotes a one-touch coupler for hermetically connecting the pipe 18 and the air tube 27, which exerts a drag force in one direction, that is, a pull-out side, and moves the tube 27 in the other direction. Air chew as possible
Claw members 51, 51 for gripping the
It is formed so as to repress the circumference, and through the connection hole 53
Main body 52 which communicates with pipe 18 and claw member 5
The claw member 5 is interposed between the tubes 1 and 51 and the tube 27.
Claw portions when 1, 51 are pressed in the above movable direction
A tapered portion 54a for expanding the members 51, 51 is formed at the tip.
And the engaged disengagement member 54 . In addition,
Reference numeral 60 in the figure denotes a fixture for fixing the pipeline 18.

FIG. 5 shows an embodiment of a refueling nozzle used in the above-described refueling apparatus. The main valve is opened when the refueling lever 20 is pulled up to feed the fuel oil of the refueling hose 3 to the nozzle tip 21. 22 is housed in the body, and an opening 24 is formed at the tip of the tube tip 21. The opening is connected to a stop valve 26 by a pipe 25, and this stop valve 26
Is connected to the pipeline 18 of the fueling device main body by an air tube 27 attached to the fueling hose 3. This stop valve 26
Is provided with an operating rod 28 interlocked with the refueling lever 20, and when the operating rod 28 protrudes, the pipe line 18 is closed,
When the operating rod 28 is pushed by the oil supply lever 20, the pipe 18 is opened.

In this embodiment, when the refueling nozzle 4 is removed from the nozzle holder 30 and the nozzle switch SW is turned on, the control device 6 returns the display 7 to zero,
To open the valve V _1. As a result, compressed air is supplied to the ejector 13 and a negative pressure is generated in the ejector 13.
This negative pressure is supplied to the switching valve V _{3. In} this state, since the switching valve V ₃ is set at the position a, the negative pressure is supplied to the air tube 27 via the pipe 18. In the present state, since the refueling lever 20 is pulled down, the stop valve 26 is in a closed state, so that a strong negative pressure acts on the air tube 27 and the pipeline 18, and the pressure switch PS is turned on. It switches from off to on under the action of negative pressure.

In this state, when the fueling nozzle 4 is inserted into the vehicle fuel tank and the fueling lever 20 is pulled up, the stop valve 26 is opened in conjunction with the fueling lever 20, so that the air tube 27 also passes through the opening 24. As a result, the negative pressure of the air tube 27 and the pressure switch PS is reduced, and the pressure switch PS switches from on to off.

The control device 7 controls the gas sensor GS when a certain time has passed since the pressure switch PS was turned off.
And the oil type is determined based on the vapor concentration. If the oil type of the vehicle fuel tank does not match the oil type of the refueling device, an alarm is issued by the annunciator 9 to prompt confirmation of the oil type. When the nozzle 4 is returned to the nozzle seat 30 to notice the error, and supplies a large amount of air in the air tube 27 by switching the valve V ₃ on the b position. Thereby, the vapor remaining in the gas sensor GS and the air tube 27 is scavenged from the check valve 29 to the outside air. When the predetermined time has elapsed, the switching valve V ₃ to form a flow path that a negative pressure can be supplied to the air tube 27 from the ejector 13 is returned to a position ready for the next refueling operation.

Meanwhile, if the result oils species determination coincide, the controller 7 drives the motor M of the pump 1 to allow the refueling, by opening the valve V _2, the vapor and the air tube 27 to the positive pressure Perform scavenging. When a predetermined amount of refueling is completed and the refueling nozzle 4 is returned to the refueling hook 30, the nozzle switch S
W turns off. Thus, the control unit 7 stops the oil supply to the nozzle 4 to stop the motor M, also closing the valve V _2, further switches the switching valve V _3. Thus is supplied a large amount of air in the air tube 27, the scavenging of the air tube 27 is completely performed to prepare for the next fueling is returned to the original position the switching valve V ₃ after a predetermined time.

If the vehicle accidentally moves during refueling, a large tension acts on the refueling hose 3, so that the safety joint 40 separates and disconnects the connection between the hose 3 and the main body 42. As a result, the tension previously received by the hose 3 directly acts on the air tube 27. As a result, the packing 45 cannot hold the tube 27 by its frictional force, and the air tube 27 moves in the direction of the symbol A in the figure. With this movement, the engagement releasing member 54 comes into contact with the receiving member 46, and the tapered portion 54a of the engagement releasing member 54 moves toward the claw member 51 to expand it. As a result, the claw member 51 is
7 to prevent the tube 27 from coming off (FIG. 2), applying excessive force to the fueling device main body 42, and cutting the tube 27.

The refueling hose is connected to the refueling device body again by a normal operation, and the air tube 27 is connected.
When the tube 27 is inserted into the one-touch coupler 50 by removing the lid member 47 and inserting the tube 27 into the lid member 47 and the packing 45, the tube 27 is
It passes through 51 and comes into contact with the connection port 53 of the coupler body 52. In this state, the connection is restored by squeezing the lid member 47 until the packing 45 exerts a predetermined gripping force.

[0018]

As described above, in the present invention,
The lubricator main body protrudes into the lubricator main body and
To hold the air tube through
Elastically deformable material that is pulled out by the pulling force acting on the material
A receiver is provided for fitting the packing made of
In addition, it exerts drag against the pull-out side, and
A claw member that allows the air tube to move
The claw member is expanded and opened by the tapered part in contact with the tool
A coupling means comprising an engagement release member;
The pipe is connected to the tip side of the
Excessive tension acts on the air tube because it is connected to
Connection with the lubrication device body is released by the joint mechanism.
It is, of excessive force in the air tube and the fuel supply apparatus body is applied
It can be prevented.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing, on an enlarged scale, a configuration of a safety joint for connecting an air tube and a fueling device main body according to an embodiment of the fueling device of the present invention.

FIG. 2 is a cross-sectional view showing a state where a safety joint of the device is separated.

FIG. 3 is a configuration diagram showing one embodiment of the present invention.

FIG. 4 is a diagram showing one embodiment of a sampling pipeline for oil type determination in the same device.

FIG. 5 is a cross-sectional view showing one embodiment of a refueling nozzle used in the same device.

[Explanation of symbols]

 3 Refueling hose 4 Nozzle 40 Joint 41 Joint 50 One-touch coupler

Claims (1)

(57) [Claims] 1. A disposed an air tube open to the nozzle needle holder of the filling nozzle to the fuel supply apparatus body along the refueling hose, the air tube to the conduit communicating with the oil type determination means of the fuel supply apparatus body in the oil supply apparatus for determine <br/> constant by sucking the vapor in the vehicle fuel tank through the opening by the oil type determination means connected to said fuel supply device body projects into the fuel supply apparatus main body,
Further, the air tube is held in a penetrating state on the outside, and
Bullets coming out due to the pulling force acting on the air tube
To which a packing made of sexually deformable material is fitted
Is provided, and also exerts a drag against the pull-out side, and
A claw member that enables the movement of the air tube
And the claw member is pressed by the receiver and is tapered by the tapered portion.
From the disengagement member to open and open the tube.
A refueling device, wherein the coupler means is provided in the refueling device main body, and a distal end side of the air tube is connected to the pipeline via the coupler means .